Home / 78,504.03-108,335.43-42,694.05

Finding the Fourth Proportional to 78,504.03, 108,335.43 and 42,694.05

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Solution

The fourth proportional to 78,504.03, 108,335.43 and 42,694.05 is: 58,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,504.03 : 108,335.43 = 42,694.05 : x
  2. Step 2: Convert to fraction form
    78,504.03/108,335.43 = 42,694.05/x
  3. Step 3: Cross multiply
    78,504.03x = 108,335.43 × 42,694.05
  4. Step 4: Simplify right side
    78,504.03x = 4,625,278,265.19
  5. Step 5: Solve for x
    x = 4,625,278,265.19/78,504.03
  6. Step 6: Final answer
    x = 58,917.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.